Home / 3,796.47-5,238.81-2,117.75

Finding the Fourth Proportional to 3,796.47, 5,238.81 and 2,117.75

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Solution

The fourth proportional to 3,796.47, 5,238.81 and 2,117.75 is: 2,922.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,796.47 : 5,238.81 = 2,117.75 : x
  2. Step 2: Convert to fraction form
    3,796.47/5,238.81 = 2,117.75/x
  3. Step 3: Cross multiply
    3,796.47x = 5,238.81 × 2,117.75
  4. Step 4: Simplify right side
    3,796.47x = 11,094,463.68
  5. Step 5: Solve for x
    x = 11,094,463.68/3,796.47
  6. Step 6: Final answer
    x = 2,922.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.